UNS N10665 Hastelloy B-2 Rod for Chemical Processing and Petrochemical Applications

When it comes to industries dealing with highly corrosive environments, choosing the right material is a matter of safety, efficiency, and long-term cost savings. One alloy that stands out in reducing acid conditions is UNS N10665, better known as Hastelloy B-2. In rod form, this nickel-molybdenum alloy is widely used in chemical processing and petrochemical industries, where equipment is continuously exposed to aggressive media such as hydrochloric acid. At DLX, we specialize in supplying Hastelloy B-2 Rods that meet international standards, providing solutions that keep industries running smoothly.

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Hastelloy B-2, designated as UNS N10665, is an advanced nickel-molybdenum alloy engineered to handle some of the harshest environments. Its unique composition gives it exceptional resistance to hydrochloric acid in all concentrations and temperatures, a property that sets it apart from many other alloys.

In rod form, Hastelloy B-2 becomes highly versatile, offering machinability for components such as pump shafts, reactor parts, fasteners, and valve stems. Its structural stability and corrosion resistance ensure reliable service life, reducing the risks of equipment failure and unplanned downtime.

Specification

item	HC-276	C-22	C-4	B2	B3	N
C	≤0.01	≤0.015	≤0.015	≤0.02	≤0.01	0.04-0.08
Mn	≤1	≤0.5	≤1	≤1	≤3	≤1
Fe	4-7	2-6	≤3	≤2	≤1.5	≤5
P	≤0.04	≤0.02	≤0.04	≤0.04	--	≤0.015
S	≤0.03	≤0.02	≤0.03	≤0.03	--	≤0.02
Si	≤0.08	≤0.08	≤0.08	≤0.1	≤0.1	≤1
Ni	rest	rest	rest	rest	≤65	rest
Co	≤2.5	≤2.5	≤2	≤1	≤3	≤0.2
Ti+Cu	--	--	≤0.7	--	≤0.4	≤0.35
Al+Ti	--	--	--	--	≤0.5	≤0.5
Cr	14.5-16.5	20-22.5	14-18	≤1	≤1.5	6-8
Mo	15-17	12.5-14.5	14-17	26-30	≤28.5	15-18
B	--	--	--	--	--	≤0.01
W	3-4.5	2.5-3.5	--	--	≤3	≤0.5
V	≤0.35	≤0.35	--	0.2-0.4	--	≤0.5

Shape	Size (mm)
Wire	0.5-7.5
Rod/Bar	8.0-200
Strip	(0.5-2.5)*(5-180)
Tube/Pipe	Custom made
Sheet/Plate	Custom made

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The strength of Hastelloy B-2 Rod lies in its broad industrial applicability. Some of the major uses include:

• Chemical Processing: Ideal for reactors, evaporators, heat exchangers, and transfer pipelines exposed to hydrochloric acid and reducing environments.

• Petrochemical Industry: Used in refining and processing equipment where aggressive reducing agents are common.

• Pharmaceuticals: Provides resistance to harsh sterilization and cleaning chemicals, ensuring purity in production.

• Pollution Control: Effective in waste treatment facilities and flue gas scrubbers handling acidic conditions.

• Energy and Power: Applied in sectors where reducing environments are present in specialized refining or processing.

• Marine Engineering: Limited use in seawater, but valuable in specific marine chemical-handling systems.

By delivering rods that can be fabricated into multiple components, DLX ensures our customers benefit from reliable material performance across different applications.

The global demand for high-performance alloys like Hastelloy B-2 is growing steadily, driven by multiple industry trends:

1. Chemical Industry Growth: The global chemical sector continues to expand, especially in Asia-Pacific, where large-scale chemical processing plants are being built. Materials like Hastelloy B-2 are critical for these operations.

2. Petrochemical Expansion: Refineries and petrochemical facilities are under pressure to process efficiently while handling aggressive chemical agents. B-2’s unique properties make it essential in this sector.

3. Environmental Regulations: Stricter pollution control measures worldwide require materials that can withstand harsh acidic scrubbing systems.

4. Pharmaceutical Demand: With the rising demand for drug manufacturing, alloys that resist contamination and withstand strong cleaning agents are increasingly important.

5. Cost Optimization: Companies are realizing that while Hastelloy B-2 may carry a higher upfront cost, it delivers long-term savings by reducing downtime and extending equipment lifespan.

At DLX, we align our production and supply capabilities with these industry demands to ensure customers receive materials that match their evolving needs.

Comparison Table: Hastelloy B-2 vs Common Alloys

While the alloy itself is important, the supplier plays an equally crucial role in ensuring performance and reliability. At DLX, we bring several advantages to our customers:

• Strict Quality Assurance: Every rod is tested for chemical composition, mechanical strength, and microstructure consistency.

• Customization: We offer rods in tailored sizes and dimensions to meet customer-specific requirements.

• Global Logistics Network: Our efficient distribution ensures timely delivery across multiple regions.

• Technical Expertise: Our team assists with welding guidelines, machining recommendations, and application best practices.

• Competitive Value: We balance premium quality with competitive pricing, ensuring maximum customer value.

This combination of high-quality product and customer-centered service makes DLX a trusted partner for industries worldwide.

Comparing Hastelloy B-2 with Other Alloys

When comparing UNS N10665 Hastelloy B-2 with alloys such as stainless steel 316L, the difference is clear. While 316L is more cost-effective, it cannot withstand hydrochloric acid effectively, leading to rapid failure in aggressive environments. On the other hand, alloys like Hastelloy C-22 perform better in oxidizing environments but cannot match B-2’s exceptional performance in reducing acids.

This makes Hastelloy B-2 the best choice for industries specifically handling hydrochloric acid and similar reducing agents. DLX ensures that customers receive this alloy in its most reliable form, ready for demanding applications.

Looking ahead, the market for UNS N10665 Hastelloy B-2 Rods is expected to grow steadily, with demand driven by:

• Asia-Pacific Chemical Plants: Rapid expansion of large-scale facilities.

• Middle Eastern Petrochemical Projects: Increasing investments in refining and chemical production.

• European Environmental Compliance: Growing need for durable alloys in pollution control equipment.

• North American Pharmaceutical Sector: Rising demand for sterile, corrosion-resistant equipment.

By maintaining strong supply capabilities and global partnerships, DLX is positioned to meet this rising demand.

UNS N10665 Hastelloy B-2 Rod is a high-strength nickel-molybdenum alloy uniquely suited for reducing acid environments, especially hydrochloric acid. Its outstanding resistance, reliability, and versatility make it essential in chemical processing, petrochemical, and related industries.

At DLX, we deliver more than just material—we deliver performance, reliability, and long-term value. With our strict quality control, custom solutions, and global support, DLX ensures that customers receive the best possible results from Hastelloy B-2 Rods.

As industries continue to grow and face increasingly aggressive environments, DLX remains committed to being the supplier of choice for UNS N10665 Hastelloy B-2 Rod, supporting critical applications around the world.

For more details, pls directly contact us.

About Us:

Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. 

For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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FAQs:

Q1: What is UNS N10665 Hastelloy B-2 Rod?

A1: It is a nickel-molybdenum alloy rod designed for superior resistance to hydrochloric acid and other strong reducing environments.

Q2: What industries use Hastelloy B-2 Rod most frequently?

A2: It is widely applied in chemical processing, petrochemical plants, pharmaceuticals, energy, and waste treatment.

Q3: How does UNS N10665 Hastelloy B-2 Rod perform in hydrochloric acid?

A3: It shows excellent resistance to hydrochloric acid at all concentrations and temperatures.

Q4: Does Hastelloy B-2 Rod resist oxidizing agents?

A4: Its resistance to oxidizing media is limited, so it is best used in reducing conditions.

Q5: Is Hastelloy B-2 Rod weldable and easy to fabricate?

A5: Yes, with proper guidelines it offers good weldability and can be fabricated using standard methods.

Q6: What is the temperature performance of UNS N10665 Hastelloy B-2 Rod?

A6: It provides reliable stability in reducing conditions up to around 425°C.

Q7: How does DLX ensure the quality of Hastelloy B-2 Rod?

A7: DLX follows ASTM standards, performs strict quality checks, and guarantees consistent chemical and mechanical properties.

Q8: Why choose DLX for Hastelloy B-2 Rod supply?

A8: DLX offers reliable quality, tailored dimensions, global delivery, and expert technical support.